/* Try to send it by calling SIMIX network layer */
TRY {
t_simdata->comm = SIMIX_req_comm_isend(mailbox, t_simdata->message_size,
/* Try to send it by calling SIMIX network layer */
TRY {
t_simdata->comm = SIMIX_req_comm_isend(mailbox, t_simdata->message_size,